What is this strange Mifare Classic card?

yukihama · 2019-03-20 19:14:55

Hi dear all,
Anyone know what on earth is this Mifare Classic Card? My friend told this is a very expensive Mifare Classic card.He want me to find some of this kind of cards in US market.But I have no idea of what this card is.It doesnt seem like normal Mifare Classic card.
Just got this result from a friend witn PM3 reading as following:

proxmark3> hf 14a reader
ATQA : 00 44
UID : 09 3a e4 b3 bc 8a 9e
SAK : 08 [2]
MANUFACTURER : NXP Semiconductors Germany
TYPE : NXP MIFARE CLASSIC 1k | Plus 2k SL1
SAK incorrectly claims that card doesn't support RATS
ATS : 09 78 00 91 02 da bc 19 10 f0 05
- TL : length is 9 bytes
- T0 : TA1 is present, TB1 is present, TC1 is present, FSCI is 8 (FSC = 256)
- TA1 : different divisors are supported, DR: [], DS: []
- TB1 : SFGI = 1 (SFGT = 8192/fc), FWI = 9 (FWT = 2097152/fc)
- TC1 : NAD is NOT supported, CID is supported
- HB : da bc 19 10
Answers to chinese magic backdoor commands: NO 、
===================================

what on earth these paramaters about?
ATS TL T0 TA1 TB1 TC1 HB

where can I buy some of these cards for my friend?
Best regards

Last edited by yukihama (2019-03-20 19:32:58)

iceman · 2019-03-20 20:43:50

7 byte Mifare Classic 1K / S50...
Try and see if its a magic?

yukihama · 2019-03-20 22:46:54

iceman wrote:

7 byte Mifare Classic 1K / S50...
Try and see if its a magic?

Thanks Pal^_^
the UID is 7 byte.
But my friend told me that the key difference is the parameters.My friend tole me this kind of card can be used to copy some hopping code system^_^
Any one know about the parameters?

JohnDoePM · 2019-03-21 09:47:34

@yukihama:

I have a card of similar type here:

pm3 --> hf 14a info
 UID : 00 00 00 00           
ATQA : 00 02          
 SAK : 18 [2]          
TYPE : NXP MIFARE Classic 4k | Plus 4k SL1 | 4k Ev1          
SAK incorrectly claims that card doesn't support RATS          
 ATS : 09 78 00 91 02 DA BC 19 10 F0 05           
       -  TL : length is 9 bytes          
       -  T0 : TA1 is present, TB1 is present, TC1 is present, FSCI is 8 (FSC = 256)          
       - TA1 : different divisors are supported, DR: [], DS: []          
       - TB1 : SFGI = 1 (SFGT = 8192/fc), FWI = 9 (FWT = 2097152/fc)          
       - TC1 : NAD is NOT supported, CID is supported          
[=] Answers to magic commands: NO          
[+] Prng detection: WEAK          
pm3 -->

This seems to be a GEN2-card, called a CUID-card. That means that it doesn't answer to chinese magic commands, but it's UID is rewritable as often as you like. This type of card is used to circumvent for example entrance systems that check for answers to chinese magic commands, i.e. for cloned cards.
Regards,

JD.

iceman · 2019-03-21 09:54:53

@johndoepm you got a 4byte Mifare Classic 4k / s70 ...

Looks like that ATS could be used for identifing that its a Gen2 magic

@yukihama , try writing S0/B0 with a valid uid/bcc with hf mf wrbl to verify that its a gen2

JohnDoePM · 2019-03-21 10:00:40

@iceman:

I successfully wrote block 0 in my card using hf mf wrbl ....
Regarding your ATS-hint: Do you have informations if such a check is performed on current check systems ?
If so: Is there a way to circumvent that ?
Cheers,

JD.

iceman · 2019-03-21 10:13:58

if such a check is performed on current check systems ?

Explain what "current check systems"

JohnDoePM · 2019-03-21 10:32:47

For example entrance systems that use Mifare Classic Cards and/or FOBS.

JohnDoePM · 2019-03-23 11:15:01

@ iceman: Does that mean "Yes" .. ? ;-)

iceman · 2019-03-23 14:54:00

too generalised question to answer.

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#1 2019-03-20 19:14:55

What is this strange Mifare Classic card?

#2 2019-03-20 20:43:50

Re: What is this strange Mifare Classic card?

#3 2019-03-20 22:46:54

Re: What is this strange Mifare Classic card?

#4 2019-03-21 09:47:34

Re: What is this strange Mifare Classic card?

#5 2019-03-21 09:54:53

Re: What is this strange Mifare Classic card?

#6 2019-03-21 10:00:40

Re: What is this strange Mifare Classic card?

#7 2019-03-21 10:13:58

Re: What is this strange Mifare Classic card?

#8 2019-03-21 10:32:47

Re: What is this strange Mifare Classic card?

#9 2019-03-23 11:15:01

Re: What is this strange Mifare Classic card?

#10 2019-03-23 14:54:00

Re: What is this strange Mifare Classic card?

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